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上下文帮助是与对话框和控件密不可分的,因为它们是上下文帮助的目标。实际上要编写上下文帮助,需要修改程序和编程工具。上下文帮助是控件的一个属性。在面向对象的编程中,属性可以有多个值并根据不同的属性值表现出不同的行为。在 Qt/KDE 编程中,使用的属性是 "whatsthis",数值是要显示的上下文帮助内容。


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